Watch UFC Fight Night 211: Dern vs. Yan for Free: How to Stream the Movie Online at 123Movies. . UFC Fight Night 211: Dern vs. Yan was a mixed martial arts event produced by the Ultimate Fighting Championship that took place on October 1, 2022, at the UFC Apex facility in Enterprise, Nevada, part of the Las Vegas Metropolitan Area, United States. The event was headlined by a women's strawweight bout between Mackenzie Dern and Yan Xiaonan.